Immigration externalities, ethnic networks, and international Knowledge Diffusion

Ernest Miguelez (University of Bordeaux) & Claudia Temgoua, “Immigration externalities, ethnic networks, and international Knowledge Diffusion”

This paper documents the influence of diaspora networks of highly-skilled individuals on international knowledge diffusion. It adds to the growing literature on high skilled international migration and its contribution to economic growth in migrants’ home countries. In particular, it explores knowledge feedbacks to home countries generated by migrant inventors, a representative category of high-skilled migrants, most of them scientists and engineers. In line with a recent strand of literature on migration and innovation studies, we make use of patent and inventor data to measure bilateral migration flows between countries, and test our hypotheses in a country-pair gravity model framework, for the period 1990-2010, using patent citations across countries as a measure of international knowledge diffusion.